Brake



June 27, 1950 E. J. SIMANEK ET AL 5 Sheets-Sheec 1 7 Filed O 0t. 2 6, l94 6 INVENTORS EDWARD J. SIMANEK NORMAN FLESCH June 27, 1950 E. J. sIMANEK ET AL BRAKE 5 Sheets-Sheet 2 Filed 001,. 26, 1946 'IN-VENTORS EDWARD J. SIMANEK NORMAN FLESCH W W AT ORNEY June 27, 1950 E. J. SIMANEK ET AL BRAKE 5 Sheets-Sheet 3 Filed Oct. 26, 1946 IINVENTORS EDWARD J. SIMANEK NORMAN FLESCH A TORNEY 5 Sheets-Sheet 4 June 27, 1950 E. J. SIMANEK ET AL BRAKE Filed Oct. 26, 1946 INVENTORS EDWARD J. SIMANEK NORMAN FLESCH BY ATTO NEY BRAKE Filed Oct. 26, 1946 5 Shee'ts-Sheet 5 INVENTORS EDWARD J. SIMANEK NORMAN FLESCH AT RNEY Fsienied june 27, 1950 BRAKE Edward J. Simanek and Norman Flesc'h, Chicago,- Ill., assignors to American Steel Foundries, Chicago, 111., a corporation of New Jersey Application October 26, 1946, Serial No. 705,892

19 Claims.

Our invention relates to brake rigging for a railway car truck, and more particularly to such an arrangement of clasp brake type wherein the power means for actuation of said brake rigging are mounted on the outboard sides of the truck frame. I

One object of our invention is to design such a type of brake rigging for a six wheel truck wherein the body clearances are particularly meager, said rigging including a set of substantially vertically disposed interconnected cylinder levers positioned outboard of the frame and connected to actuating means mounted on the outboard sides of said frame.

Another object of our invention is to design such a type of brake rigging wherein a plurality of power means will be supported on each side of the truck intermediate the ends thereof, said power means on the same side of the truck being connected in tandem and actuating a unified structure of rigging on the same one side of the truck. f

A further object of our invention is to provide, in'the brake riggingof a railway car truck, novel release means for holding the rigging in off position when not actuated by the power means associated therewith said means including a plurality of springs connected at one end to a member of the rigging and at the other end to the frame at a point adjacent the dead end of said rigging.

These and other objects of our invention will be apparent from the specification and the drawings.

In the drawings, wherein for clarity details are omitted from certain views where better shown in, others;

Figures 1 and 1A are top plan views showing one-half of a truck and brake structure embodying our invention, Figure 1 showing one end thereof and Figure 1A the other end;

Figures 2 and 2A are side elevations respectively of the truck structure shown in Figures land 1A;

Figure 3 is an end elevation of the structure shown in Figures 1, 1A, 2 and 2A the view being taken from the left as seen in Figures 1 and 2;

Figure 4 is an end elevation of the structure shown in Figures 1, 1A, 2 and 2A, the view being taken from the right as seen in Figures 1A and 2A; and

Figure 5 is a sectional view of the structure shown in Figures 1 and 1A, the view being taken in the transverse vertical plane substantially asindicated by line 5-5 of Figure 1.

Describing our novel brake arrangement in greater detail, the truck structure comprises the structionof bracket-:64 will not be described in 2 v side members 2 integrally joined intermediate the ends of the truck by spaced transoms 4, '4; each of said members presenting adjacent their ends the column guides B, 6 and 8, 8 and intermediate their ends the column guides ll], I0 arranged for engagement in the usual manner with journal boxes (not shown) serving asthe' usual means of connection to the journal por-ff tions of the wheel and axle assemblies l2, l4 and I6.

The power means (Figure 1) may consistof a pair of spaced air cylinders l8 and (Figures 1 and 1A) arranged in tandem, the adjacent sides of said cylinders being secured to said side member 2 by the securing means 22, 22 and 24, 24 as at- 26, 26 (Figure 2A) and 28, 28 (Figure 2) respectively. The cylinder [8 has a piston 30 pivotally con nected as at 32 (Figure 2A) to the lower end off the diagonally arranged; approximately upright"; cylinder lever 34, the upper end of said lever pro-'1 jecting into the diagonal opening 36 (Figure 1A)" in the bracket 38, said opening being defined by the spaced end webs40, 40 and the spaced parallel diagonal inboard and outboard webs 42, 42 off said bracket 38, said inboard web merging with I the mounting plate 44 (Figure 1A) secured to said member 2 adjacent the top thereof by the securing means 46, 46. j

The upper end of said cylinder lever 34 may pivot as at 48 on the pin 50 (Figure 2A) extend-7, ing through said outboard and inboard webs' 42'; 42 of said bracket 38. To secure the pin 50 in the bracket 38a pair of outwardly projecting spaced lugs 52, 52 may be provided on the said outboard web 42. vAligned horizontal openings 54!, 54 (Figure 1A) maybe provided in said lugs 52 for reception of a cotter key (not'shownl which may hold saidpin'50 from falling out of.- position. I The cylinder lever 34 may be pivoted inter-, mediate the ends thereof as at 54 (Figure 2A) to, one end of the rod 56 (Figure 1A) passing over said cylinder 18 and lying in the longitudinal vertical plane substantially bisecting said cylin: der, said rodvhaving its opposite end pivotally-=-; connected as at 58 (Figure 1) to the cylinder; lever 60 (Figure 2) intermediate the ends thereof,,g said cylinder lever 60 being diagonally arranged; and parallel to said cylinder lever 34. v

The upper end of the lever 60 may be fulcrumed asatjZ to the bracket 64,- said bracket 64 being: fastened to said side member'2 adjacentthe top; thereof by the securing means 66, B6. The con detail inasmuch as it is identical with bracket 38.

The lower end of the cylinder lever 60 may be pivotally connected as at 61 (Figure 2) to the piston 68 (Figure 1) of the cylinder 20.

To the cylinder lever 60 at the point 58 previously described may also be pivoted one end of the rod '10 passing 'over said cylinder 20 and lying in the longitudinal vertical plane substantially bisecting said cylinder 20 and lying in approximately the axial plane of the said rod 56'. The other end of said rod extends beyond the inturned end 12 of the side member 2 and is pivoted as at 14 to the outboard end of the horizontal dead lever 16, said dead lever being iul-, crumed intermediate its ends as at 10 on the automatic slack adjuster 60 secured to said end 12 as by bolts 82, 82 (Figure 3).

The inboard end of the dead lever 16 is pivoted as at 84 to one end of the rod 86, the other endof saidrod being pivotally secured as at 8.8 (Eigure. 2-) to theupper end of thevertical live truck lever 90. positioned adjacent one. side of they wheel. and axleassembly I2, said live lever xt n i throu h the horizontalrod 92 and be-..

ing pivoted and adiustably connected between its. ends as at either 94 or 86 intermediate the ends of said horizontal rod. The, outer end of said rod. 82, may be antiirictionally supported on the roller bearing 98 mounted on the support bracket I00 (Figure 3) secured to said. inturned end 12 as at I02 by the bolts I04, while. the other end of. a d re file t ds ver the wheel and ax eas- 35 9151. a i vQ sd as a I0 to. e v rti al live truck lever I08 intermediate the ends thereof,

i ev 1 be n dis osed ad a ent the com. site side of the said Wheel and axle assembly 2;

The lower end of the; live lever 9Q. r naybe pivotally fastened to one end ot the fulcrum 1L0; secured, as, by rivets H2, I12 (Figure 3,) to the brake beam I.I 4, said. beam being pivoted at the. end thereof to the lower extremity of, the hanger lever IIB which in turn may be pivotal'ly hungasat H8 at its. upper end from the underside. of said inturned end 12. Intermediate the ends, of; the, hanger lever H6. may: pivot as at; I the brake head and shoe. assembly I22. positioned; d ac n Said. w e nd. axle ssembl ai assembly 122 including a brake head. balancing evice 2 a ounc the beam Iii-may belooped thesafety rod [26' fastened as at I28, I28. fr0m the, underside ofsaid inturned end 12;, said safety rod serving to uphold'said beamshoulditsother sup.- Q Tts il- The upper end of the live. truck lever I08 may be pivoted as at I29 to theadj acent jaw. endv of the; equalizer I30- (Figure 1) extending between said members 2 andparallel'to. the adjacent trai som 4 and slidably supportedon the angles. I321 carried on said adjacent, transom 4 and being fastened thereto by the'securing; means I34 (Figure 5).

The lower end of the live truck lever I08 may be pivotally secured tothe fulcrum I36 on the connector I38, the trunnion end of said connec torbeing supported by the hanger lever I 40* hung from the frame as at I42, said hanger. lever I40 supporting intermediate its ends; as at 144 the usual brake head I46 with thebalancing-devitze I48 and brake shoe I58;

Theequalizer I30 previously described may be secured intermediate its endsat a point as at ISL-(Figure l) to oneend of the pull-rod I54, said'zrod: extending through the aligned openings I56, I56:in=.the; adjacent transom. 4 andbeing antifrietionally supported as at I58 by a roller provided on the bracket I60 carried by the said transom 4. The other end of the pull rod I54 may be pivoted as at I62 (Figure 2) to the upper end of the live truck lever I64, the lower end of which may be connected to the fulcrum I66 of the connector I68, the trunnion end of said connector being supported by the hanger lever I10 hung from the frame as at I 12, said hanger lever I10 supporting braking means (not shown) as at I14.

A safety rod I15 may be looped under the said connectors I38 and I68, here illustrated as beams, and connected as at I11, I11 to the span bolster I80.

The pull rod H6 is connected to the live lever I64 as at I65 and extends through the aligned openings I18, I18 in the span bolster I positioned intermediate the transoms 4, 4 affording support therefor in the usual manner, said rod I16 being antifrictionally supported as at I82 and I84, by the rollers provided on the brackets I86 and I88 carried by said span bolster.

The opposite end of the pull rod I16 may be pivoted as at I90 (Figure. 2A); to the live truck lever I92, the lower end of said lever having a pivotalconnection as at 94 tothe fulcrum I96 on the connector I98, thetrunnion end of saidconnector I 9.8 being supported. by the hanger lever 200 hung from the frame. as at 202 and carrying braking. means. (not shown) as at 2.04 for association with the periphery of the assembly I4 previously described The upper end of the live, truck lever I52 may be connected through the pull rod 206- to the equalizer 206 (Figure 1A.) slidably supported, on the bracket 2I0 carried, by the adjacent transom. 4. The pull rod 206, may. extend through the aligned. openings 2I.2, 212 in the said adjacent, transom 41 and; may be antifrictionally supported, as at. 2M}. by the, roller bearing on the bracket- 2 I6 carried by the said transom 4'.

The. pivotal jaw. end of. the equalizer. 208. may be pivotally connected to. the. upper. end. of the. live trucklever 2I8', (Figure 2A)., positioned adja.- cent one side; of the said wheel and axle assembly I6, the lowe nd. of saidl'ever being, con.- nectedto the fulcrum 220 of't heconnector 222,, the trunnion, end of 'said' connector being. supported by'the han er le er, 224i which is hung, from the truck frame as at 226 adjacent the juncture-of the said last mentioned transom 4. with theside member 2, said hanger lever carrying braking, meansas at 221'.

The safety; ro d' 2213 may. pass under the. said connectors I98 and 222 and be connectedias at 230,,230on the span bolster I80.

The pull rod 232 may extend over the wheel and axle assembly I16 and may be connected to, the said live lever ZIBas' at 234' (Figure 2A), at one end. A- manually adjustable slack ad'- just-er 236 of any; suitable type is provided at the other end of saidpull, rod which is connected as at 231 to the dead truck lever: 238 positionedat the opposite side of the, said assembly I6, said deadlever 2-38*bein pivoted at its upper extremity as at 240 to" the bracket 242 secured. in any convenient-manner asby rivets-.244, 2'44 to the inturned end 245-bp the side member 2.

To the bracket 242 may be hooked as at 246 one-end of the release' spring 24'8,'the otheren'd of said springbeing hooked to theequalizer 208-" to a bracket on the other side frame (not shown) and that the axes of the two springs converge inwardly.

The lower end of the dead lever 238 may b connected to the fulcrum 252 of the beam 254, the trunnion end of said beam being supported by the hanger lever 255 hung as at 258 from the said interned end 245 of said member 2. Connected to said end as at 260, 260 is a safety support 262 for said beam 254, said support being in the form of a loop bracket.

On the hanger lever 256 as at 264 may be hung the brake means (not shown).

Operation of the brake mechanism is as follows: Assuming the brakes to be in released position, actuation of the power means or brake cylinders 18 and 20 moves the piston rods 30 and 68 to the right and causes the cylinder levers 34 and 60 to rotate simultaneously in a counterclockwise direction about their respective pivot points 48 and B2 andthrough the rods 56 and cause the outboard end of the horizontal dead lever 76 to move to the right about the pivot 18, whereupon the inboard end of said dead lever 18 moves to the left. Movement of the dead lever l6 pulls the rod 86 to the left which in turn through the pivot point 88 actuates the live lever 90 in a counterclockwise direction and pulls it to the left and thus through the fulcrum III] on the connector H4 brings the brake shoe assembly I22 into engagement with the periphery of the adjacent wheel and axle assembly [2.

The movement of the live lever 90 also actuates the rod 92 to the left which in turn pulls the live lever 588 to the left, and rotates it in a clockwise direction, said live lever bringing the connected brake shoe I58 into engagement with the periphery of said assembly l2.

The movement of the live lever I08 pulls the equalizer ISO to the left which in turn pulls the rod I54 to the left rotating the live lever I64 in a counterclockwise direction and also pulls it to the left, the movement of said live lever I64 urging braking means connected thereto against the periphery of the wheel and axle assembly M.

The movement of live lever I64 in turn pulls the rod I16 to the left which rotates the live lever H32 in a clockwise direction operating a braking mechanism on the opposite side of the assembly it against the periphery thereof.

The movement of the lever 192 pulls the rod 206 to the left, said rod rotating the live lever 2| 8 in a counterclockwise direction and pulling the rod 232 which rotates the dead lever 238 in a clockwise direction on the pivot 240 and actuating braking means on said levers 2! and 238, said braking means clasping the periphery of the wheel and axle assembly I6 therebetween.

Release of the power means with the aid of the release springs 248 causes the various parts to move in reverse of the directions just specified, thus releasing the brake mechanism.

It is to be understood that we do not wish to be limited by the exact embodiment of the device shown which is merely by way of illustration and not limitation as various and other forms of the device will, of course, be apparent to those skilled in the art without departing from the spirit of the invention or the scope of the claims.

We claim:

1. In a brake arrangement for a six wheel railwaycar truck, a truck frame and'suppdrt ing end and intermediate wheel and axle 'assemblies, brake means for said assembliesbrake to said brake; means and comprising interconnected live truck? rigging operatively connected levers at opposite sides of one of said end as-- semblies and said intermediate assembly, inter-- connected live and deadtruck levers at opposite sides of the other end assembly, an equalizer connected to one of the live truck levers associated with said intermediate assembly and said second-mentioned live truck lever, brakerelease means connected in parallel with saidsecond-mentioned levers, a plurality of power cylinder devices arranged substantially vertical cylinder lever pivoted to each of said devices at its lower end and to the frame at its upper end, means interconnecting said cylinder levers and an operative connection between one of said cylinder levers and the live truck lever of said one end assembly.

2. In a brake arrangement, a truck frame including a side member, supporting wheel and axle assemblies, braking means for said as-- semblies, a horizontal dead lever pivoted intermediate the ends thereof on said side member at a point adjacent one end of said side memadjacent each cylindenand connected thereto at the other end, and horizontally positioned interconnecting means for said cylinder levers pivoted at opposite ends thereof to said cylinder levers, said interconnecting means being disposed in a substantially vertical plane biseeting said cylinders longitudinally and overlying one of said cylinders, said cylinder levers and interconnecting means being aligned with each other longitudinally of said cylinders.

3. In a brake arrangement, a, truck frameincluding a side member, supporting wheel and axle assemblies, braking means for said assemblies, a horizontal dead lever pivoted intermediate the ends thereof on said side member at a point adjacent one end of said side member and pivoted-at its inner end to said braking means and operatively connected at its outer end to power means, the said power means including a pair of cylinders arranged in tandem and mountedv on said member intermediate the ends thereoi,, a substantially upright cylinder lever pivoted at.

one end to said frame adjacent each cylinder and connected thereto at the other end, and horizontally positioned interconnecting means:: for said cylinder levers pivoted at opposite ends: thereof to said cylinder levers, said interconnecting means being disposed in a substantially vertical plane bisecting said cylinders longitudinally and overlying one of said cylinders.

4. In a brake arrangement, a, truck frame including a side member, supporting wheel and axle assemblies, braking means for said assemblies, a horizontal dead lever pivoted intermediate the ends thereof on said side member at a point adjacent one end of said side member and pivoted at its'inner end to said braking means and operatively connected at its outer end to power means, the said power means includin a pair' of cylinders arranged in tandem and mounted in tandem and mounted on the outboard side of said frame, a

on said member intermediate the ends thereof, a substantially upright cylinder lever pivoted at one end to said frame adjacent each cylinder and connected thereto at the other end, and horizontally positioned interconnecting means for said cylinder levers pivoted at opposite ends thereof to said cylinder levers, said interconnecting means being disposed in a substantially vertical plane bisecting said cylinders longitudinally.

5. In a brake arrangement, the combination of a truck frame including a side frame, wheel and axle assemblies disposed in supporting relation to said truck frame, brake rigging associated with said wheels for braking cooperation therewith, operating means for said brake rigging including a, pair of horizontally disposed cylinders mounted on said side frame intermediate the ends thereof, parallel interconnected substantially upright cylinder levers fulcrumed from said side frame at their corresponding upper ends and connected at their lower ends to adjacent cylinders, a horizontally disposed dead lever pivoted from said side frame at a point adjacent one end thereof and connected at its inner end to said rigging, and a pull rod con nected at one end to one of said cylinder levers and passing over the adjacent cylinder and corrnected at the other end to the outer end of said horizontally disposed dead lever.

B. In a brake arrangement, the combination, of a truck frame including a side frame, wheeland axle assemblies disposed in supporting relation to said truck frame, brake rigging asso. oiated with said wheels for braking cooperation therewith, operating means for said brake rig-- ging including a pair of cylinders mounted on said side frame at spaced points, a pair of levers each being pivoted to the piston of the adjacent cylinder at one end and to said frame at the other end, means interconnecting said levers, said means being pivoted to said levers at points intermediate the ends thereof, said levers being disposed in substantially vertical plane extend ing longitudinally of said cylinders, and means pivoted to one of said levers at the pivot of said first-mentioned means for interconnecting said levers to said rigging.

I 7. In a car truck, the combination of a, side. frame, Wheel and axle assemblies, brackets mounted on said frame adjacent the top thereof at spaced points intermediate the ends of said frame slightly inclined dead levers pivoted at. their upper ends from said brackets, power means connected to the lower end of each lever, said power means being. disposed horizontally and arranged in tandem and operating in the same direction, a pull rod interconnecting said levers. intermediate the ends thereof and passing over one of said power means, a pull rod pivoted to one of said levers at the point of connection of. said one lever to said first-mentioned pull rod and being co-axial with said first-mentioned pull rod, and brakin means for said, wheel and axle assemblies operatively connected to said seconds mentioned pull rod.

8. In a railway car truck, a frame including a. side member having inturned ends, supporting Wheel and axle assemblies, braking means for said assemblies, power means for said braking means, a horizontal dead lever fulcrumed from one end of said side member adjacent the corner thereof and connected at its inner end to said braking means and at its outer end to. said power. means, said power means including a plurality of cylinders mounted on said side ni-eni her at spaced points intermediate the ends thereof, a substantially vertical dead lever fulcrumed from said side member at the upper end thereof adjacent each cylinder and connected thereto at its lower end, a connection between said lastmentioned dead levers, said connection being disposed above said cylinders and lying in a plane extending longitudinally thereof.

9. In a brake arrangement, the combination.

of a truck frame including a side frame, wheel and axle assemblies disposed in supporting relation to said truck frame, brake rigging asso-.

oted at opposite ends thereof to said levers at points intermediate the ends thereof, and means pivoted to one of said levers at the point of connection of said rod with said lever for connecting the latter to said rigging.

10. In a brake arrangement, a truck frame including a side member, supporting wheel and axle assemblies, braking means for said assemblies, a horizontal dead lever pivoted intermedi ate the ends thereof on side member at a point adjacent one end of said side member and pivoted at its inner end to said braking means and operatively connected at its outer end to power means, the power means including a pair of cylinders arranged in tandem and mounted on said member intermediate the ends thereof, a substantially upright cylinder lever pivoted at one end to said frame adjacent each cylinder and connected thereto at the other end and horizontally positioned interconnecting means for said cylinder levers pivoted at opposit ends thereof to said cylinder levers.

11. In a railway car truck, a truck frame, spaced supporting end and intermediate wheel and axle assemblies, brake means for said assemblies, said. brake means being dead-ended at one end of said truck and including live and dead truck levers at opposite sides of the adjacent end wheel and axle assembly, brake release means operatively connected to said live truck. lever and to. said frame, and power means c-peratively connected to the live end of said brake means and including spaced power devices mounted on said frame and connected in tandem to each other.

12.. In a railway car truck, a truck frame including a side frame, spaced supporting wheel. and axle assemblies, braking means for said assemblies, power means. for said braking means, a dead lever fulcrumed from one end of said side frame and having its inner end connected to said braking means and having its outer end connected to. said power means, the arrangement of said power means onv said side frame comprising horizontally disposed cylinders mounted thereon in tandem and interconnected dead levers fulcrumed fromsaid frame and connected to said cylinders, said last-mentioned dead levers being aligned with each other longitudinally of said cylinders and lying in :a substantially vertical plane.

13. In a brake arrangement, the combination of said wheel and axle assemblies for braking cooperation therewith, operating means for said brake rigging including a pair of cylinders arranged in tandem and mounted on said side frame intermediate the ends thereof, and a pair of substantially Vertical cylinder levers pivoted at their upper ends to said truck frame and connected at their lower ends to the respective of said cylinders and connected intermediate their ends to each other and to said brake rigging.

14. In a railway car truck, a frame having side members, end and intermediate wheel and axle assemblies, dual power means connected in tandem on each side of said frame, said tandem connection comprising interconnected substantially vertical cylinder levers fulcrumed from the frame at their upper ends and connected :at their lower ends to adjacent power means, horizontal dead levers fulcrumed from opposite corners of said frame adjacent one end thereof and operatively connected to adjacent cylinder levers, said cylinder levers on each side of said frame being aligned with each other longitudinally of said cylinders, and braking means for said assemblies operatively connected to said horizontal dead levers.

15. In a railway car truck, a side frame, supporting wheel and axle assemblies, braking means for said assemblies, a dual power means arranged in tandem and connected to each other and mounted on said frame intermediate the top and bottom thereof and operatively associated with said braking means, said connections comprising a pair of substantially upright cylinder levers hung from said frame at spaced points adjacent the top of said frame, each of said levers extending downwardly to respective of said power means and connected thereto, and a pull rod overlying one of said power means interconnecting said cylinder levers intermediate the ends thereof.

16. In a railway car truck, a truck frame member, spaced supporting wheel and axle assemblies, brake means for said assemblies, power means for said brake means including spaced substantially horizontally disposed cylinders mounted on said member in alignment with each other longitudinally of the truck and arranged to operate in the same direction, means interconnecting said cylinders including a dead lever pivoted to the frame member adjacent each cylinder and operatively connected thereto, a connection between said levers, and means operatively connecting said brake means with one of said levers.

17. In a car truck, a truck frame, supporting wheel and axle assemblies, brake means for said assemblies, power means for said brake means including a plurality of power devices spaced longitudinally of the truck carried by said frame and arranged to operate in the same direction, a plurality of interconnected spaced dead levers fulcrumed to said frame and operativel connected to the respective power devices, and an operative connection between one of said levers and said brake means, said levers being arranged substantially in alignment with each other longitudinally of the truck.

18. In a railway car truck, a truck frame, spaced wheel and axle assemblies, a plurality of cylinder devices spaced longitudinally of the truck carried by said frame and arranged to operate in the same direction, a lever pivoted to said frame adjacent each of said devices and operatively connected thereto, means extending longitudinally of the truck in a plane substantially bisecting said cylinder devices longitudinally interconnecting said levers, brake means for said assemblies, and an operative connection between one of said levers and said brake means.

19. In a railway car truck, a truck member, spaced wheel and axle assemblies, brake means for said assemblies, power means for actuating said brake means including a plurality of spaced power cylinder devices carried by said member, and means interconnecting said devices with each other and with said brake means including spaced interconnected levers pivotally connected to said member and operatively connected to respective devices.

EDWARD J. SIMANEK. NORMAN FLESCH.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,010,941 Mickelsen Dec. 5, 1911 1,939,926 Schwentler Dec. 19, 1933 2,460,196 Simpson Jan. 25, 1949 

